michaelandrepearce edited a comment on issue #2514: ARTEMIS-2236 Address Latency Impact caused by ARTEMIS-1451 URL: https://github.com/apache/activemq-artemis/pull/2514#issuecomment-456708382 ARTEMIS-1451 removed synchronization in the class, by adding the overhead of creating a new thread until threadpool is full, this though means that instead of re-using an existing idle thread for new work, new threads are being created which is expensive, and which is the point of thread pooling. We have seen a 15-20% latency increase hit since 2.4.0 due to this.
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